#include "WiFi.h"
#include <HTTPClient.h>
#include <ArduinoJson.h>

String stMac;
char mac[50];
String ip;
String sn = "5440973";
String api_key = "ADu2FL4V7LdfprFNL9xpKkbVw873";
String url = "http://service.wf8266.com/api/mqtt/" + sn + "/CONFIG/" + api_key;
void setup() {
  Serial.begin(115200); 
  int LED_BUILTIN = 2; 
  pinMode(LED_BUILTIN, OUTPUT); 
  digitalWrite(LED_BUILTIN, LOW); 
  // setup WiFi
  Serial.println("Initializing WiFi...");
  WiFi.mode(WIFI_STA);
  WiFi.disconnect(); // 無線初始化
  Serial.println("Connecting to WiFi ");
  WiFi.begin("Wokwi-GUEST", "");
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  digitalWrite(LED_BUILTIN, HIGH);
  Serial.println("");
  Serial.println("WiFi connected");
  ip = WiFi.localIP().toString(); // 取得分配到的 IP 位址
  Serial.println("IP address: " + ip);
  // 顯示 MAC 位址 
  Serial.println("MAC address: " + WiFi.macAddress()); 
}

void loop() {
  HTTPClient http; // 建立 http client 物件
   Serial.println("啟動網站連線");
   http.begin(url); // 啟動網頁連線
   int httpCode = http.GET(); //連線請求方法，回應狀態碼
   Serial.printf("httpCode=%d\n", httpCode);
   if (httpCode == HTTP_CODE_OK){
     String payload = http.getString(); // 取得回應的資訊
     //Serial.println(payload);
     //----------解析 JSON 資料----------
       // 宣告變數儲存 JSON 資料   
     DynamicJsonDocument airbox_json(payload.length()*2);
     deserializeJson(airbox_json, payload);// payload 轉成 JSON 物件
     String temp = airbox_json["data"]["Message"][0]["TEMP"].as<String>(); //獲得溫度資訊
     String humi = airbox_json["data"]["Message"][0]["HUM"].as<String>(); //獲得濕度資訊
     String pm25 = airbox_json["data"]["Message"][0]["PMAT25"].as<String>(); //獲得PM2.5資訊
    Serial.println("溫度:" + temp + " C"); //在序列埠列印出來
    Serial.println("濕度:" + humi + " %"); //在序列埠列印出來
    Serial.println("PM2.5:" + pm25 + " ug/m3"); //在序列埠列印出來
    delay(1000);       
   }   
    http.end(); //關閉網站連線;
   delay(20000); 
}